void
physallocinit(void)
{
uintmem top, avail, base, size, lim, pa, lo, hi;
RMapel *e;
if(DBGFLG)
rmapprint(&rmapram);
avail = rmapsize(&rmapram);
DBG("avail: %#P\n", avail);
top = 0;
for(e = rmapram.map; e != nil; e = e->next)
top = e->addr + e->size;
if(top > 4ull*GiB){
physgig = bpoolcreate(MidK, MaxK, 4ull*GiB, top, alloc0);
phys = bpoolcreate(MinK, MaxK, 0, 4ull*GiB, alloc0);
}else
phys = bpoolcreate(MinK, MaxK, 0, top, alloc0);
pa = mmuphysaddr(sys->vmstart) + sys->pmunassigned;
if(DBGFLG)
rmapprint(&rmapram);
DBG("pa lim: %#llux top %#llux\n", pa, top);
while(rmapfirst(&rmapram, pa, &base, &size)){
if(base >= 4ull*GiB)
break;
lim = base+size;
if(lim > 4ull*GiB)
lim = 4ull*GiB;
lo = ROUNDUP(base, (1<<MinK));
hi = ROUNDDN(lim, (1<<MinK));
if(lo != hi){
DBG("lo=%#llux hi=%#llux\n", lo, hi);
pa = rmapalloc(&rmapram, lo, hi-lo, 0);
if(pa == 0)
break;
physinitfree(lo, hi);
sys->pmpaged += hi - lo;
}
}
if(DBGFLG)
physdump();
}
void
asmmeminit(void)
{
Proc *up = externup();
int i, l;
Asm* assem;
PTE *pte, *pml4;
uintptr va;
uintmem hi, lo, mem, nextmem, pa;
#ifdef ConfCrap
int cx;
#endif /* ConfCrap */
assert(!((sys->vmunmapped|sys->vmend) & machp()->pgszmask[1]));
if((pa = mmuphysaddr(sys->vmunused)) == ~0)
panic("asmmeminit 1");
pa += sys->vmunmapped - sys->vmunused;
mem = asmalloc(pa, sys->vmend - sys->vmunmapped, 1, 0);
if(mem != pa)
panic("asmmeminit 2");
DBG("pa %#llux mem %#llux\n", pa, mem);
/* assume already 2MiB aligned*/
assert(ALIGNED(sys->vmunmapped, 2*MiB));
pml4 = UINT2PTR(machp()->pml4->va);
while(sys->vmunmapped < sys->vmend) {
l = mmuwalk(pml4, sys->vmunmapped, 1, &pte, asmwalkalloc);
DBG("%#p l %d\n", sys->vmunmapped, l);
*pte = pa|PtePS|PteRW|PteP;
sys->vmunmapped += 2*MiB;
pa += 2*MiB;
}
#ifdef ConfCrap
cx = 0;
#endif /* ConfCrap */
for(assem = asmlist; assem != nil; assem = assem->next) {
if(assem->type != AsmMEMORY)
continue;
va = KSEG2+assem->addr;
print("asm: addr %#P end %#P type %d size %P\n",
assem->addr, assem->addr+assem->size,
assem->type, assem->size);
lo = assem->addr;
hi = assem->addr+assem->size;
/* Convert a range into pages */
for(mem = lo; mem < hi; mem = nextmem) {
nextmem = (mem + PGLSZ(0)) & ~machp()->pgszmask[0];
/* Try large pages first */
for(i = m->npgsz - 1; i >= 0; i--) {
if((mem & machp()->pgszmask[i]) != 0)
continue;
if(mem + PGLSZ(i) > hi)
continue;
/* This page fits entirely within the range. */
/* Mark it a usable */
if((l = mmuwalk(pml4, va, i, &pte, asmwalkalloc)) < 0)
panic("asmmeminit 3");
*pte = mem|PteRW|PteP;
if(l > 0)
*pte |= PtePS;
nextmem = mem + PGLSZ(i);
va += PGLSZ(i);
npg[i]++;
break;
}
}
#ifdef ConfCrap
/*
* Fill in conf crap.
*/
if(cx >= nelem(conf.mem))
continue;
lo = ROUNDUP(assem->addr, PGSZ);
//if(lo >= 600ull*MiB)
// continue;
conf.mem[cx].base = lo;
hi = ROUNDDN(hi, PGSZ);
//if(hi > 600ull*MiB)
// hi = 600*MiB;
conf.mem[cx].npage = (hi - lo)/PGSZ;
conf.npage += conf.mem[cx].npage;
print("cm %d: addr %#llux npage %lud\n",
cx, conf.mem[cx].base, conf.mem[cx].npage);
cx++;
#endif /* ConfCrap */
}
print("%d %d %d\n", npg[0], npg[1], npg[2]);
#ifdef ConfCrap
/*
* Fill in more conf crap.
* This is why I hate Plan 9.
*/
conf.upages = conf.npage;
i = (sys->vmend - sys->vmstart)/PGSZ; /* close enough */
conf.ialloc = (i/2)*PGSZ;
print("npage %llud upage %lud kpage %d\n",
conf.npage, conf.upages, i);
#endif /* ConfCrap */
}